Constraining very-high-energy and optical emission of Fast Radio Bu=
rsts with IACTs.

Fast radio bursts (FRBs) are =
bright flashes observed typically at GHz frequencies with millisecond durat=
ion, whose origin is likely extragalactic. Their nature remains<=
span style=3D"color: rgb(0,0,0);">mysterious, motivating searches for count=
erparts at other wavelengths. FRB 121102 is so far the only source known to=
repeatedly emit FRBs and is associated with a hostgalaxy at redshift z ~ 0.193. The repeating nature =
of this source makes it possible to conduct joint simultaneous observations=
between different instruments to potentially associate higher energy count=
erparts. The benefit of using Imaging Atmospheric Cherenkov Telescopes (IAC=
Ts) to study these counterparts is twofold: while searching for gamma-ray e=
mission, their large collection area as compared with satellites makes them=
more suitable to conduct searches on short observation time-scales; while =
searching for optical emission of milli-second duration, their large reflec=
ting surface and extremely fast readout also makes them very competitive in=
this energy range. IACT capabilities to constrain optical and VHE FRB emis=
sion will be discussed, along with the latest results of both MAGIC and VER=
ITAS collaborations.